Adapt for base 3

What does this MR do?

• Fix: parse errors when generating ctags for modules containing derivation imports which were added in base 3 (this e.g happens when running nitrile fetch).
• Chore: update nitrile to base 3.

Changes to public APIs

N/A

Author's checklist (required)

• A changelog entry has been added (guidelines)
• Newly added code is documented (guidelines)
• Newly added code has a style consistent with the rest of the repository
• Intermediate commits compile (use git rebase -i main if not)

Related issues